What is the electron configuration of selenium?

What is the electron configuration of selenium?

Answer: The correct electron configuration of selenium is:

[Ar] 3d10 4s2 4p4

This electron configuration depicts the distribution of the electrons occupying the districts of the selenium atom in their most stable state. The [Ar] means the complete configuration of argon and this becomes the core. Next, selenium has 10 electrons for three d shells, 2 electrons for s, and 4 electrons for p in the fourth shell. This configuration is due to the selenium’s place on the periodic table as a d-block element of Group 16 and atomic number 34. Knowledge about electron configurations also plays a great role in chemistry as it determines the chemical abilities, bonding and reactivity of an element. But it also allows for predicting the spectroscopic properties of the element, as well as the preference for forming specific categories of compounds.